package com.xx.expriment2;

import org.springframework.boot.CommandLineRunner;
import org.springframework.core.env.Environment;

import java.util.Objects;

@SuppressWarnings("unused")
public class CustomCommandLineRunner implements CommandLineRunner {
    Environment env;

    public CustomCommandLineRunner(Environment env) {
        this.env = env;
    }

    @Override
    public void run(String... args) throws Exception {
        System.out.println("利用Spring Boot 自动装配的CommandLineRunner");

//        生成一个32位随机子串
        System.out.println("生成一个随机字符串: ".concat(Objects.requireNonNull(env.getProperty("random."))));
    }
}
